摘要:异丙醇铝作为铝源通过直接法制备Al-SBA-15介孔分子筛,经1 mol/L硫酸浸渍,得到固体超强酸SO2-4/AlSBA-15,利用X-射线粉末衍射、透射电镜和N2吸附-脱附实验对其进行表征。合成偏苯三酸三辛酯中SO2-4/AlSBA-15的催化活性高于SBA-15、Al-SBA-15,在210℃,偏苯三酸酐和2-乙基己醇的摩尔比为1∶4,催化剂用量为总反应原料质量的4%,反应6 h,偏苯三酸三辛酯的酯化率为96.7%。催化剂重复使用六次,酯化率仍为94.4%。
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